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2 Sheets-Sheet 1.

(No Model.)

T. KENNEDY. SGA-PPOLD TRUSS 0R SUPPORT PoR BUILDING, DBGORATING, 0R

OTHER PURPOSES.

Patented' May 2, 1893.

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SOAPPOLD TRUss OR SUPPORT POB. BUILDING, DEO'ORATING, OR OTHER`PURPOSES.

.NO. 496,7' Y. Patented May 2,-1893..

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THOMAS KENNEDY, oF NEW YORK, N. Y.

SCAFFOLD TRUSS OR SUPPORT FOR BUILDING, DECORATING, OR OTHER PURPOSES.

SPECIFICATION forming part of Letters Patent No. 496,739, dated May 2,1893.

Application filed November 44, 1892. Serial No. 450,938. (No model.)

To all whom, t may concern.-

Be it known that I, THOMAS KENNEDY, of the city, county, and State ofNew York,have invented new and useful Improvements in Scaffold Trussesor Supports for Building, Decorating, or other Purposes, of which thefollowing is a full, clear, and exact descripion.

This invention consists in an adjustable telescopic scaffold truss orsupport for building purposes, painting or decorating ceilings, alsoapplicable as a tower and for other purposes or uses, the same embracingthe features of construction and novel combinations of parts hereinafterdescribed and claimed, and wherebya cheap, lightbut stable andadjustable structure of the above kind is produced, capable of easyerection and of being closed or dismembered when not in use so as tooccupy but little space or compass during transportation and whenstoring away.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l represents a perspective view of my improved scaffold truss orsupport as erected and partly extended; Fig.2 a horizontal section ofthe same upon the line 2f2 in Fig. l; Fig. 3 avertical section mainlyupon the line 3 3 in Fig. 2, of the structure Whenclosed and with one ofits base timbers removed and shown in plan view at its side. Fig. t is asectional elevation mainly upon the line 4 4 in Fig. 5, showing amodified construction of the truss or support and representing the sameas erected and partly extended; and Fig. 5 a partly sectional elevationat right angles to Fig. 4, mainly upon the irregular line 5-5 in Fig. 4.

Referring in the rst instance to the first three figures of thedrawings, the whole structure is mainly made of wood so as to be readilybuilt by any carpenter, and its upright portion constructed oftelescopio g wooden sections of angular or rectangular form intransverse section and tted to slide up and down one within the other,each succeeding upper one of said members or sections being of less sizetransversely than the one immediately below it. Thus A, is the first orlowest and largest one of said members, of rectangular sleeve-likeconstruction built up of boards to give it its tubular shape and of anysuitable length or height but preferably longer than each succeedingtelescoping member. This lower square or tubular vmember A, is securedwhen erected to or on a solid fourarmed Wooden base or stand B B, byangle iron braces b and bolts and nuts c, which, when required todismember the structure to facilitate packing or storing may be readilydetached so as to leave the base or stand loose or independent of therest of the parts, and this base or stand being made of two crossingtimbers mortising one into the other, may also be readily dismemberedwhen required and the timbers beplaced parallel with one another orotherwise.

A2 A3 A4, are similarly constructed and shaped wooden tubular orsleeve-like members, of which there may be any number, of

consecutively diminishing size -transversely in an upward direction soas to slide or telescope one within the other, the member A2 within themember A and each Succeeding telescoping member one within the other.These several members are made capable of varied adjustment up or downand of being locked or secured when so adjusted to vary the workingheight of the whole structure, by a series of bolt holes d, arranged oneabove the other in opposite sides of the telescoping members anddetachable screw bolts e fitted with nuts and adapted to pass throughthe bolt holes d, so as to lock or secure each pair of telescopingmembers together, the several bolt holes d in said members being spacedto match in the independent adjustment of the members. This provides ina very simple manner for a very varied adjustment of the truss orsupport to any desired height. The .upper telescoping member A5 may be asolid stick of wood, having bolt holes d, through it and secured inposition by one of the bolts e, and having mounted on it ahead-piece ortable D, which will serve to support the one end of a scaffold, while asimilarly constructed IOO scoping members may be closed or shut down oneWithin the other as shown in Fig. 3, so as to occupy but little space orcompass when not required to be used, thus leaving the telescopingmembers in position for extension again when required. The easy andcheap construction of the several telescopic members as described is astrong point in favor of the truss, and their square or angular figureinsures a steady guiding of them free from any turning of them,endangering the support of the scaffold erected or resting on the truss.

Figs. 4 and 5 show a substantially similar construction, but withmechanism operating from the base ofthe trusst'or adjusting the severaltelescopic or sliding sections bodily after they or certain of them havebeen individually adjusted up or down by the bolts c and the bolt holesd. The object of this is to securea more gradual and closer or fineradjustment ot' the truss to a particular elevation as may be sometimesnecessary. To this end I arrange on the base or stand B and Within thev4Iirst section or member A ot' the truss which is stationary, a'frameor support f, carrying a vertical bevel wheel g, which may be operatedby a crank or handle 7L that may be made accessible by unlocking andopening a door c' in one side of the section A of the truss. This Wheelg gears with a horizontal bevel wheel 7c also carried by said framefandhaving attached to it an upright screWZ that engages with a tixed nut orscrew-box in a bridge m fast to and extending upwardly within and acrossthe lower end portion ot the first sliding section or member A2 of thetruss, so that accordingto the direction in which the handle h isrotated Will the several sliding and adjustable upper sections ormembers of the truss be bodily or collectively raised or lowered to givea nice or tine adjustment of the truss to any particular elevation. Inthis modication there Will be no necessity to have bolt holes in thelower member or section A for locking by a cross bolt the sections A andA2 together when the latter is adjusted up or down, as the mechanism foroperating the sliding sections bodily or together dispenses with this.The several truss sections or members may be closed one Within the otherwhen not required to be used, substantially as in the herein-previouslydescribed modification.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In an upright truss or support for scat'- folding and other purposes,the series of angularl tubulartelcscopic sections or members capable ofsliding and being independently adj usted up or down one Within theother and provided with a series of opposite bolt holes in their sidesarranged one above the other and so as to match or -register with eachother throughout the several sections, in combination with a series ofremovablebolts passing through' said holes and adapted to independentlylock two or more adjoining telescopic members or` sections under variedadjustments together and to secure the Whole ofthe sections in place,essentially as shown and described.

2. In a telescopic truss of the character described, the combination,with the irstorlowest tubular sliding section of the truss,'of a gearingand screw mechanism adapted to gradually adjust the height ot' thetruss, each sliding section or member of which truss is provided withmeans for independently adjusting it one within'another, substantiallyas described.

THOMAS KENNEDY.

Witnesses:

EDWD. M. CLARK, F. W. HANAFORD.

